I do have a few, but use one most of the time.Well I'm pretty sure my coils are lasting longer in the provari too. I think it's the consistent quality of the vape delivery but I have thinned out my mixes with water so that could be contributing. Don't you have like a bunch of them now? Perhaps you are vaping less on each device-- it's not length of time, but number of puffs....
Anna
I’m not complaining, these things are great

